[Amended 12-12-1983 by Ord. No. 13-83]
If lawful use involving individual structures with a replacement cost of $1,000 or more, or of structures and premises in combination, exists at the effective date of adoption or amendment of this chapter that would not be allowed in the district under the terms of this chapter, the lawful use may be continued so long as it remains otherwise lawful, subject to the following provisions:
A.
The Board of Appeals may permit a nonconforming structure or use to expand on its lot subject to the setback regulations of the zoning district, provided that the expansion of a nonconforming structure or use shall be limited to the lot limits which existed on the property in question at the time of adoption of this chapter. In permitting any expansion, the Board may require appropriate conditions and safeguards in accordance with the provisions of this chapter. Any expansion to existing attached dwellings, where considered a nonconforming use or structure:
(1)
Shall not extend to a depth of 14 feet from the original dwelling;
(2)
Shall not exceed one story in height;
(3)
Shall have two side yards with a minimum width of three feet each, except that one side of said expansion may be built along the adjoining attached dwelling unit or the property line of the adjoining attached dwelling unit, provided that a fire wall is constructed along said property line or adjacent dwelling unit;
(4)
Shall be within the boundary of the existing lot; and
(5)
Shall be attached to the rear of the original building only.
B.
Any nonconforming use may be extended throughout any parts of a building which were manifestly arranged or designed for such use at the time of adoption or amendment of this chapter.
C.
If no structural alterations are made, any nonconforming use of a structure or structure and premises may be changed to any other nonconforming use if the Board of Appeals shall, in granting a special exception, find that the proposed nonconforming use is not more detrimental to the district than the existing nonconforming use. In permitting this change, the board may require appropriate conditions and safeguards in accord with the provisions of this chapter.
D.
Any structure, or structure and land in combination, in or on which a nonconforming use is superseded by a permitted use shall thereafter conform to the regulations for the district, and the nonconforming use may not thereafter be resumed.
E.
When a nonconforming use of a structure, or structure and premises in combination, is discontinued or abandoned for 12 consecutive months (except when government action impedes access to the premises), the structure, or structure and premises in combination, shall not thereafter be used except in conformity with the regulations of the district in which it is located. The Board of Appeals may, by granting a special exception, extend this time period to 24 consecutive months where a specific case warrants such action.